He was acting manly in front of his girlfriend, but her sister saw right through his masochistic side and teased him until he was boneless. The first time he met her sister, she was a beautiful and sexy adult woman. He couldn't help but stare, and then she suddenly started playing with his nipples... thoroughly. Constant nipple play sex, and even after ejaculating, he was sent to heaven with male squirting! In a situation where he couldn't let his girlfriend find out, the intense nipple stimulation teasing made him explode, turning him into her sister's servant.
